Here's how I learned it: chorus:

My paddle's keen and bright flashing with silver follow the wild goose flight dip dip and swing.

Verse: Dip dip and swing the oar flashing with silver moonlight bids to the shore dip dip and swing.

repeat chorus

I was taught that the flashing with silver denotes the water on the paddle or oar (especially looking silver at night), follow the wild goose flight means go south as it soon will be winter. Dip dip and swing means "paddle" two strokes quickly on one side of the birch bark canoe, then swing the paddle or oar to the other and do the same-repeatedly. And, of course, one can see the outline of the shoreline in the moonlight from out on the water in one's canoe.